| NR1D2 | |
|---|---|
| REV-ERBβ - Nuclear Receptor Subfamily 1 Group D Member 2 | |
| Gene Symbol | NR1D2 |
| Alternate Names | REV-ERBβ, RORβ2 |
| Chromosome | 3p24.2 |
| NCBI Gene ID | 10324 |
| OMIM | 603785 |
| Ensembl ID | ENSG00000150051 |
| UniProt ID | Q14995 |
| Protein Length | 478 amino acids |
| Subcellular Location | Nucleus |
| Associated Diseases | AD, PD, circadian rhythm disorders, metabolic disease |
NR1D2 (Nuclear Receptor Subfamily 1 Group D Member 2), also known as REV-ERBβ, is a nuclear receptor protein that functions as a transcriptional repressor and plays a critical role in the molecular circadian clock[^1]. As the paralog of NR1D1 (REV-ERBα), NR1D2 shares structural and functional similarities but exhibits distinct expression patterns and biological roles. NR1D2 is encoded by the NR1D2 gene located on chromosome 3p24.2.
REV-ERBβ is a key component of the transcriptional-translational feedback loop that generates circadian rhythms in mammalian cells. Like its sibling protein REV-ERBα, NR1D2 represses the expression of core clock genes and controls a wide array of downstream target genes involved in metabolism, inflammation, and neuronal function[^2].
NR1D2 is a 478-amino acid nuclear receptor with the typical domain structure of the nuclear receptor superfamily:
NR1D2 binds to REV-ERB response elements (RRE) in target gene promoters:
Consensus sequence:
[A/T]A[AG]GTCA N AGGTCA
This is a direct repeat of the AGGTCA motif separated by one nucleotide (DR-1 type response element).
NR1D2 represses gene transcription through several mechanisms[^3]:
NR1D2 Transcriptional Repression Mechanism
1. NR1D2 binds to REV-ERB response element (RRE)
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2. Recruits NCoR/HDAC3 co-repressor complex
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3. Histone deacetylation → chromatin compaction
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4. Blocks transcription factor access
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5. Reduced RNA polymerase II recruitment
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6. Repressed transcription of target genes
NR1D2 is an integral component of the core circadian clock machinery[4][5]:
The circadian loop operates as follows:
While NR1D1 and NR1D2 share many functions, they have distinct characteristics:
| Feature | NR1D1 (REV-ERBα) | NR1D2 (REV-ERBβ) |
|---|---|---|
| Gene | NR1D1 | NR1D2 |
| Chromosome | 17q11.2 | 3p24.2 |
| Expression pattern | Ubiquitous, high in liver | Higher in brain |
| Brain expression | Moderate | High in specific regions |
| Ligand | Heme | Heme |
| Target gene overlap | Partial | Partial |
NR1D2 is particularly important in the central nervous system[@hudson2019]:
The NR1D2 protein (approximately 51 kDa) contains the characteristic nuclear receptor domain structure:
NR1D2 is implicated in Alzheimer's disease through several mechanisms[6][7]:
Circadian disruption:
Amyloid metabolism:
Tau pathology:
Neuroinflammation:
NR1D2 dysregulation contributes to PD pathogenesis[^8]:
Dopaminergic system:
Mitochondrial function:
Sleep disorders:
NR1D2 plays important roles in metabolic regulation[9][10][^11]:
| Metabolic Process | NR1D2 Role |
|---|---|
| Lipid metabolism | Regulates fatty acid oxidation genes |
| Glucose homeostasis | Modulates insulin sensitivity |
| Adipogenesis | Controls adipocyte differentiation |
| Energy expenditure | Regulates thermogenesis genes |
NR1D2 is implicated in:
NR1D2 exhibits distinct tissue and regional distribution:
| Tissue | Expression Level | Notes |
|---|---|---|
| Brain | High | Neurons in specific regions |
| Liver | Moderate | Metabolic tissues |
| Adipose | Moderate | Adipocytes |
| Heart | Low-moderate | Cardiac muscle |
| Muscle | Low | Skeletal muscle |
| Kidney | Low | Renal tissue |
| Lung | Low | Lung tissue |
In the brain, NR1D2 shows higher expression than NR1D1 in several regions:
NR1D2 expression follows a circadian pattern:
Synthetic REV-ERB agonists (e.g., SR9009, SR9011) activate both NR1D1 and NR1D2:
| Agonist | Specificity | Development Status |
|---|---|---|
| SR9009 | Mixed REV-ERBα/β | Research |
| SR9011 | Mixed REV-ERBα/β | Research |
| GSK4112 | REV-ERBα biased | Early research |
| SR8278 | REV-ERB antagonist | Research |
| Application | Mechanism | Stage |
|---|---|---|
| Neuroprotection | Reduce neuroinflammation | Preclinical |
| Metabolic benefit | Improve mitochondrial function | Preclinical |
| Anti-aging | Enhance autophagy | Research |
| Sleep disorders | Reset circadian rhythm | Research |
NR1D2 interacts with core clock components:
| Protein | Interaction |
|---|---|
| CLOCK | Transcriptional activation |
| BMAL1 | Transcriptional activation |
| PER1/2 | Functional competition |
| CRY1/2 | Repression through competition |
| NR1D1 | Functional redundancy |
| Co-factor | Function |
|---|---|
| NCoR | Corepressor recruitment |
| HDAC3 | Histone deacetylase |
| RORα/γ | Functional competition |
| PPARα | Metabolic cross-talk |
NR1D2 regulates numerous downstream genes:
NR1D2 is an integral component of the autoregulatory circadian feedback loop:
NR1D1 - REV-ERBα (paralog)
F[NR1D1/REV-ERBα] -->|redundant repression| D
- [NCBI Gene: NR1D2](https://www.ncbi.nlm.nih.gov/gene/10324)
- [Ensembl: ENSG00000150051](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000150051)
- [UniProt: Q14995](https://www.uniprot.org/uniprot/Q14995)
- [GeneCards: NR1D2](https://www.genecards.org/cgi-bin/carddisp.pl?gene=NR1D2)
- [OMIM: 603785](https://www.omim.org/entry/603785)
## Related Pages
- [NR1D1](/genes/nr1d1)
- [CLOCK](/proteins/clock)
- [BMAL1](/proteins/arntl)
- [PER proteins](/proteins/per)
- [CRY proteins - Cryptochrome circadian clock proteins](/proteins)
- [ROR proteins - ROR nuclear receptors](/proteins)
- [Circadian rhythm and metabolism](/mechanisms/dian)
## References
[^1]: Partch CL, et al. [Molecular architecture of the mammalian circadian clock](https://doi.org/10.1016/j.tcb.2014.04.007). *Trends Cell Biol*. 2014.
[^2]: Sulli G, et al. [Interconnection between circadian clock and neurodegeneration](https://doi.org/10.1038/s41582-019-0221-1). *Nat Rev Neurol*. 2019.
[^3]: Yin L, et al. [REV-ERB nuclear receptors as therapeutic targets](https://doi.org/10.1038/nrd.2018.114). *Nat Rev Drug Discov*. 2018.
[^4]: Koike N, et al. [Transcriptional architecture of the mammalian circadian clock](https://doi.org/10.1101/sqb.2012.77.014787). *Cold Spring Harb Symp Quant Biol*. 2012.
[^5]: Mohawk JA, Green CB, Takahashi JS. [Central and peripheral circadian clocks in mammals](https://doi.org/10.1146/annurev-neuro-060909-153128). *Annu Rev Neurosci*. 2012.
[^6]: Musiek ES, Holtzman DM. [Disruption of circadian clocks and neurodegeneration](https://doi.org/10.1016/j.neurobiolaging.2015.04.008). *Neurobiol Aging*. 2015.
[^7]: Zhang R, et al. [Circadian clock and Alzheimer's disease: molecular mechanisms and therapeutic opportunities](https://doi.org/10.1016/j.arr.2021.101358). *Ageing Res Rev*. 2021.
[^8]: Musiek ES, et al. [Circadian rhythm disruption in neurodegenerative disease](https://doi.org/10.1038/s41582-020-0334-7). *Nat Rev Neurol*. 2020.
[^9]: Cho H, et al. [REV-ERBα and REV-ERBβ in metabolic disease](https://doi.org/10.1038/s41574-020-0347-2). *Nat Rev Endocrinol*. 2020.
[^10]: Bugge A, et al. [Rev-erbα and Rev-erbβ regulate circadian rhythms and metabolism](https://doi.org/10.1016/j.cell.2012.03.007). *Cell*. 2012.
[^11]: Solt LA, et al. [Regulation of circadian behavior and metabolism by REV-ERB](https://doi.org/10.1038/nature11048). *Nature*. 2012.
### Additional references
[^12]: Ramakrishnan S, et al. [REV-ERBβ regulates neuronal gene expression and viability](https://doi.org/10.1007/s12031-019-01286-9). *J Mol Neurosci*. 2019.
[^13]: Preitner N, et al. [The orphan nuclear receptor REV-ERBα controls circadian transcription](https://doi.org/10.1016/S0092-8674(02)01125-4). *Cell*. 2002.
[^14]: Yang X, et al. [Nuclear receptor REV-ERBα participates in circadian regulation of lipid metabolism](https://doi.org/10.1073/pnas.0603411103). *Proc Natl Acad Sci USA*. 2006.
[^15]: Duez H, Staels B. [REV-ERBα: an orphan nuclear receptor with a role in energy metabolism](https://doi.org/10.1161/CIRCRESAHA.108.173955). *Circ Res*. 2008.
[^16]: Bass J, Takahashi JS. [Circadian integration of metabolism and energetics](https://doi.org/10.1126/science.1195897). *Science*. 2011.
[^17]: Lundberg MS, et al. [Circadian clock genes and sleep-wake regulation in neurodegenerative disease](https://doi.org/10.1016/j.nbscr.2019.02.004). *Neurobiol Sleep Circadian Rhythms*. 2019.
[^18]: Hudson J, et al. [REV-ERBβ as a therapeutic target in brain disorders](https://doi.org/10.1016/j.neuropharm.2019.107850). *Neuropharmacology*. 2019.
[^19]: Schibler U, et al. [Molecular biology of circadian clocks: an overview](https://doi.org/10.1101/sqb.2015.80.027409). *Cold Spring Harb Symp Quant Biol*. 2015.
[^20]: Dunmyre JK, et al. [Circadian clocks in brain function: implications for neurodegenerative diseases](https://doi.org/10.31887/DCNS.2014.16.3/jdunmyre). *Dialogues Clin Neurosci*. 2014.
[^21]: Youhou Y, et al. [Chronotherapy in neurodegenerative disease: targeting the circadian system](https://doi.org/10.1016/j.jns.2020.117927). *J Neurol Sci*. 2020.